12.6
Removing and installing alternator
•
Remove seat.
•
Remove fuel tank.
e Caution:
Switch off ignition. Disconnect ground (earth) cable
at battery and insulate it.
•
Remove horn with holder.
•
Remove front cover from engine.
•
Remove alternator retainers (1, 2, 3).
•
Remove rotary breather tube.
•
Remove Poly-V belt.
•
Remove the starter motor.
•
Lock clutch housing with special tool
BMW No. 11 5 640.
•
Remove Poly-V belt pulley with rotor gate at
crankshaft.
•
Remove the left exhaust pipe.
•
Drain engine oil.
•
Remove the oil cooler return line.
•
Pull the rear of the motorcycle down to the hoist
platform and secure it with a strap or similar.
•
Detach the left air intake flange.
e Caution:
Mask off the leading link to prevent it from being
scratched.
•
Release the threaded connection for the lower
suspension strut mount.
•
Release the leading link shaft at the right and re-
move it to the left.
•
Pull the leading link forwards.
•
Place sliding sleeve, BMW No. 11 5 680, on the
crankshaft and remove the alternator support
cover.
•
Detach the central electrical equipment box and
raise it as far as possible.
•
Detach the connecting leads at the alternator.
•
Remove the alternator.
•
Install by following the above work instructions in
the reverse order.
Poly-V belt adjusting procedure:
Poly-V belt installation procedure:
•
Place the Poly-V belt in position, tension it and
turn the engine over once, then release belt ten-
sion.
Poly-V belt tensioning procedure:
•
Loosen alternator mount (1, 2, 3).
•
Screw up hex nut (1) at adjusting screw (4) lightly
by hand (using no tools).
•
Tighten adjusting screw (4) using torque wrench;
fully tighten retaining nut (3), slacken off adjusting
screw and tighten down screws.
L Note:
See also Service Information 12 020 95 (700).
X Tightening torque:
Poly-V belt preload......................................... 8 Nm
Alternator to alternator support cover........... 20 Nm
Positive lead to alternator............................. 15 Nm
Belt pulley at alternator ................................ 50 Nm
RS110480
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